| 摘要 |
PROBLEM TO BE SOLVED: To prevent the abnormal wear of a spherical body so as to improve compressive performance by returning lubricating oil to a rolling raceway of a spherical body. SOLUTION: A thrust load carrier 12 is composed of a spherical body storage cylinder 13 provided in a casing 1; a spherical body 15 accommodated in the spherical body storage cylinder 13; and a spherical body retainer 16 positioned in the spherical body storage cylinder 13 and provided with a holding plate 17 for holding the spherical body 15 to a rolling raceway, and protrusions 18, 18 returning grease G filled in the spherical body storage cylinder 13, to the rolling raceway of the spherical body 15. The grease G scraped out of the rolling raceway by rolling of the spherical body 15 is therefore returned to the rolling raceway of the spherical body 15, so that a contact part between the spherical body 15 and the casing 1, and a contact part between the spherical body 15 and a turning scroll 5 can always be lubricated with the grease G. |
